Siemens LOHER DYNAVERT I 6SE03 User manual

Installation and Operating Instructions for LOHER DYNAVERT I Series 7
Installation and Operating
Instructions for LOHER DYNAVERT I
Series 7
Operating Instructions
10/2022
4BS0745
-002
Introduction
1
Safety information
2
Description
3
Preparations for use
4
Installation
5
Electrical connection
6
Commissioning
7
Operation
8
Maintenance
9
Spare parts
10
Diagnostics, faults and
warnings
11
Service & Support
A
Quality documents
B
Technical data
C
List of abbreviations
D

Siemens AG
Digital Industries
Postfach 48 48
90026 NÜRNBERG
GERMANY
Document order number: 4BS0745
Ⓟ
10/2022 Subject to change
Copyright © Siemens AG 2012 - 2022.
All rights reserved
Legal information
Warning notice system
This manual contains notices you have to observe in order to ensure your personal safety, as well as to prevent
damage to property. The notices referring to your personal safety are highlighted in the manual by a safety alert
symbol, notices referring only to property damage have no safety alert symbol. These notices shown below are
graded according to the degree of danger.
DANGER
indicates that death or severe personal injury will result if proper precautions are not taken.
WARNING
indicates that death or severe personal injury may result if proper precautions are not taken.
CAUTION
indicates that minor personal injury can result if proper precautions are not taken.
NOTICE
indicates that property damage can result if proper precautions are not taken.
If more than one degree of danger is present, the warning notice representing the highest degree of danger will
be used. A notice warning of injury to persons with a safety alert symbol may also include a warning relating to
property damage.
Qualified Personnel
The product/system described in this documentation may be operated only by personnel qualified for the specific
task in accordance with the relevant documentation, in particular its warning notices and safety instructions.
Qualified personnel are those who, based on their training and experience, are capable of identifying risks and
avoiding potential hazards when working with these products/systems.
Proper use of Siemens products
Note the following:
WARNING
Siemens products may only be used for the applications described in the catalog and in the relevant technical
documentation. If products and components from other manufacturers are used, these must be recommended
or approved by Siemens. Proper transport, storage, installation, assembly, commissioning, operation and
maintenance are required to ensure that the products operate safely and without any problems. The permissible
ambient conditions must be complied with. The information in the relevant documentation must be observed.
Trademarks
All names identified by ® are registered trademarks of Siemens AG. The remaining trademarks in this publication
may be trademarks whose use by third parties for their own purposes could violate the rights of the owner.
Disclaimer of Liability
We have reviewed the contents of this publication to ensure consistency with the hardware and software
described. Since variance cannot be precluded entirely, we cannot guarantee full consistency. However, the
information in this publication is reviewed regularly and any necessary corrections are included in subsequent
editions.

Installation and Operating Instructions for LOHER DYNAVERT I Series 7
Operating Instructions, 10/2022, 4BS0745-002 3
Table of contents
1 Introduction ........................................................................................................................................... 9
1.1 About these instructions ...................................................................................................... 9
1.2 Intended use ....................................................................................................................... 9
1.3 Validity.............................................................................................................................. 10
1.4 Text format features .......................................................................................................... 10
1.5 Presentation of the display buttons in the operating instructions ........................................ 11
1.6 Specific features ................................................................................................................ 12
2 Safety information............................................................................................................................... 13
2.1 The five safety rules........................................................................................................... 13
2.2 Use of tested, certified and Siemens-approved components ............................................... 14
2.3 Areas that are potentially and particularly hazardous.......................................................... 14
2.4 Notes for operator protection............................................................................................. 16
2.5 Standards and guidelines for proper use of inverters .......................................................... 20
2.6 Plant safety........................................................................................................................ 21
2.7 Security information .......................................................................................................... 22
2.8 Components that can be destroyed by electrostatic discharge (ESD) ................................... 23
2.9 Electromagnetic fields........................................................................................................ 24
2.10 Radio telephones and mobile telephones ........................................................................... 25
2.11 Note regarding fiber-optic cables ....................................................................................... 26
2.12 Protecting/fusing the external 230 V AC control voltage ..................................................... 26
2.13 Residual risks ..................................................................................................................... 27
3 Description........................................................................................................................................... 29
3.1 Updating inverter software or instructions.......................................................................... 29
3.2 Order numbers MLFB / Type designations........................................................................... 29
3.3 Accessories........................................................................................................................ 33
3.3.1 Use of tested, certified and Siemens-approved components ............................................... 33
3.3.2 Peripheral boards 1 to 4, -A95, option G02 to G05.............................................................. 34
3.3.2.1 General information about the peripheral boards 1 to 4...................................................... 34
3.3.2.2 PTC inputs for motor PTC thermistor................................................................................... 35
3.3.3 Parameter overview........................................................................................................... 36
3.3.4 "Factory settings" application ............................................................................................. 36
3.3.5 Main switch DYNAVERT Q 2J... or DYNAVERT W 2J... ........................................................... 37
3.3.6 External display ................................................................................................................. 37
3.3.7 Optional fieldbus connection ............................................................................................. 37

Table of contents
Installation and Operating Instructions for LOHER DYNAVERT I Series 7
4Operating Instructions, 10/2022, 4BS0745-002
3.3.7.1 PROFIBUS DP ..................................................................................................................... 37
3.3.7.2 Modbus RTU ...................................................................................................................... 39
3.3.7.3 Modbus TCP ...................................................................................................................... 41
4 Preparations for use ............................................................................................................................ 45
4.1 Transporting inverter ......................................................................................................... 45
4.2 Storage of the inverters ..................................................................................................... 47
4.3 EMC .................................................................................................................................. 48
4.3.1 Install and connect in accordance with EMC. ...................................................................... 48
4.3.2 Example of correct EMC connection ................................................................................... 49
4.3.3 Line short-circuit power ..................................................................................................... 49
4.3.4 Interference immunity ....................................................................................................... 49
4.3.5 Emitted interference.......................................................................................................... 50
4.3.6 Reactive power.................................................................................................................. 52
4.4 Realizing operation in the explosion-protected zone........................................................... 52
5 Installation........................................................................................................................................... 55
5.1 Installing inverter - General notes....................................................................................... 55
5.2 Installing cabinet units....................................................................................................... 56
5.3 Mounting an external display (option)................................................................................ 58
6 Electrical connection ........................................................................................................................... 61
6.1 General information about the electrical connection .......................................................... 61
6.2 Protecting the inverter ....................................................................................................... 62
6.3 Circuit breaker ................................................................................................................... 62
6.4 Connecting control cable ................................................................................................... 63
6.5 Line supply connection ...................................................................................................... 63
6.5.1 Suitable supply line configurations..................................................................................... 63
6.5.2 Dimensioning mains power cables ..................................................................................... 64
6.5.3 RCD circuit breaker ............................................................................................................ 64
6.5.4 Connecting mains power cable to the inverter.................................................................... 65
6.5.5 Inverter connection for different pulse operation ............................................................... 66
6.6 Motor connection .............................................................................................................. 66
6.6.1 Motor selection ................................................................................................................. 66
6.6.2 Motor voltage and type of circuit ....................................................................................... 67
6.6.3 Dimensioning motor cables ............................................................................................... 67
6.6.4 Connecting motor cable..................................................................................................... 68
6.6.5 Connecting the PTC thermistor of the motor to the inverter................................................ 68
7 Commissioning .................................................................................................................................... 69
7.1 Checks without mains power supply and without motor..................................................... 69
7.2 Check with line voltage in no-load operation (uncoupled) .................................................. 70
7.3 Checks with mains power supply and with motor ............................................................... 74
7.4 Checking with motor coupled to the work machine............................................................ 75

Table of contents
Installation and Operating Instructions for LOHER DYNAVERT I Series 7
Operating Instructions, 10/2022, 4BS0745-002 5
8 Operation............................................................................................................................................. 77
8.1 Operation.......................................................................................................................... 77
8.1.1 Function of the inverter display.......................................................................................... 77
8.1.2 Switching the unit on and off............................................................................................. 79
8.1.3 Setting the language ......................................................................................................... 80
8.1.4 Setting the date and time................................................................................................... 80
8.1.5 Setting the level of detail of the inverter menu................................................................... 80
8.1.6 Inverter operating commands ............................................................................................ 81
8.1.7 Configuring operating sources ........................................................................................... 83
8.1.8 Invoking mode configurations............................................................................................ 83
8.1.9 Communication Options .................................................................................................... 84
8.1.10 Meaning of the abbreviations for operating functions......................................................... 85
8.1.11 "P-fieldbus" function .......................................................................................................... 85
8.1.12 "P-DIGITAL OUTPUTS" function ........................................................................................... 85
8.1.13 "P-ANALOG OUTPUTS" function .......................................................................................... 86
8.1.14 Operation of several inverters on one PC ............................................................................ 86
8.2 Standard mode settings ..................................................................................................... 87
8.2.1 Operation "std siss" ............................................................................................................ 87
8.2.2 Operation "std sisd"............................................................................................................ 88
8.2.3 Operation "std dids" ........................................................................................................... 88
8.2.4 Operation "std didd"........................................................................................................... 89
8.3 NAMUR mode settings ....................................................................................................... 90
8.3.1 Operation according to NAMUR defaults ............................................................................ 90
8.3.2 Operation according to "Namur 1"...................................................................................... 90
8.3.3 Operation according to "Namur 2"...................................................................................... 91
8.3.4 Operation according to "Namur 3"...................................................................................... 92
8.3.5 Operation according to "Namur 4"...................................................................................... 93
8.3.6 Operation according to "Namur 5"...................................................................................... 93
8.3.7 Operation according to "Namur 6"...................................................................................... 94
8.4 Controlling the external connections of the inverter ........................................................... 95
8.4.1 Function of the control cable terminals .............................................................................. 95
8.4.2 Protective separation according to EN 61800-5-1 ............................................................... 95
8.4.3 Sub-D and USB connections and DIL switches ..................................................................... 98
8.4.4 USB interface..................................................................................................................... 99
8.4.5 DIL switches "S1" and "S2" .................................................................................................. 99
8.4.6 Connecting encoders ....................................................................................................... 101
8.4.7 Connect the PC via USB at -X50B ...................................................................................... 103
8.4.8 Connecting a PC to -X51 via RS 232.................................................................................. 103
8.4.9 Connection for optional external display with RS 485 ....................................................... 104
8.5 Special functions ............................................................................................................. 105
8.5.1 Protective functions ......................................................................................................... 105
8.5.2 Multiple function of the analog and digital inputs............................................................. 107
8.6 Setpoint channel and closed-loop control......................................................................... 111
8.6.1 Specifying source for speed setpoint ................................................................................ 111
8.7 Parameterization ............................................................................................................. 112
8.7.1 Principle of operation of the configuration ....................................................................... 112
8.7.2 Protecting parameters against modification...................................................................... 114
8.7.3 Configuration using the inverter display........................................................................... 114
8.7.4 More documentation about parameterization .................................................................. 115

Table of contents
Installation and Operating Instructions for LOHER DYNAVERT I Series 7
6Operating Instructions, 10/2022, 4BS0745-002
8.8 Examples / Applications ................................................................................................... 116
8.8.1 "Standard" application...................................................................................................... 116
8.8.1.1 Standard control cable terminals...................................................................................... 116
8.8.1.2 Control cable terminals "peripheral board 1"..................................................................... 117
8.8.1.3 Control cable terminals "peripheral board 2"..................................................................... 117
8.8.1.4 Control cable terminals "peripheral board 3"..................................................................... 118
8.8.1.5 Control cable terminals "peripheral board 4"..................................................................... 119
8.8.1.6 Operation setting for the "Standard" application............................................................... 119
8.8.1.7 Assignment of the digital inputs....................................................................................... 120
8.8.1.8 Assignment of the digital outputs .................................................................................... 120
8.8.1.9 Assignment of the analog inputs...................................................................................... 120
8.8.1.10 Assignment of the analog outputs ................................................................................... 121
8.8.1.11 PTC thermistor inputs on the peripheral board.................................................................. 121
8.8.2 "Namur" application......................................................................................................... 122
8.8.2.1 Control cable terminals for the "Namur" application.......................................................... 122
8.8.2.2 Control cable terminals "peripheral board 4"..................................................................... 123
8.8.2.3 Operation setting of the "Namur" application ................................................................... 125
8.8.2.4 Assignment of the relay outputs ...................................................................................... 125
8.8.2.5 Assignment of the analog inputs...................................................................................... 125
8.8.2.6 Assignment of the analog outputs ................................................................................... 126
9 Maintenance...................................................................................................................................... 127
9.1 Maintenance and servicing .............................................................................................. 127
9.2 Decommissioning ............................................................................................................ 127
10 Spare parts......................................................................................................................................... 129
10.1 Non-approved spare parts................................................................................................ 129
10.2 Spare parts ...................................................................................................................... 129
11 Diagnostics, faults and warnings ...................................................................................................... 131
11.1 General information about error detection ....................................................................... 131
11.2 Reading event log............................................................................................................ 132
A Service & Support .............................................................................................................................. 133
A.1 Siemens Industry Online Support ..................................................................................... 133
B Quality documents ............................................................................................................................ 135
B.1 Quality documents for LOHER DYNAVERT I ....................................................................... 135

Table of contents
Installation and Operating Instructions for LOHER DYNAVERT I Series 7
Operating Instructions, 10/2022, 4BS0745-002 7
C Technical data.................................................................................................................................... 137
C.1 Conformity ...................................................................................................................... 137
C.2 Technical data for transportation ..................................................................................... 138
C.3 Technical data for storage................................................................................................ 138
C.4 Technical data for operation............................................................................................. 139
C.5 Tightening torques for power cables ................................................................................ 139
C.6 Technical data of the control cable terminals.................................................................... 140
C.7 Technical data and identification of the PTC thermistor input at peripheral boards 2 and
4 ..................................................................................................................................... 142
C.8 Derating .......................................................................................................................... 143
C.8.1 Current derating .............................................................................................................. 143
C.8.2 Voltage derating.............................................................................................................. 143
D List of abbreviations .......................................................................................................................... 145
Index .................................................................................................................................................. 147

Table of contents
Installation and Operating Instructions for LOHER DYNAVERT I Series 7
8Operating Instructions, 10/2022, 4BS0745-002

Installation and Operating Instructions for LOHER DYNAVERT I Series 7
Operating Instructions, 10/2022, 4BS0745-002 9
Introduction
1
1.1 About these instructions
These Operating Instructions describe the device and provide you with information about
handling it - from the initial shipment up to disposal. Keep these instructions for later use.
Read these Operating Instructions and comply with the information provided in them. In this
way you can ensure safe, problem-free operation and a long service life.
Safety information and handling-related warnings are provided in these Operating
Instructions. For your own safety, the safety of other persons and to avoid material damage,
carefully follow these instructions when carrying out any work.
If you have suggestions for improving the document, please contact our Service Center.
1.2 Intended use
The products described in this manual, together with software, accessories and options, form
an electric drive to supply low-voltage, three-phase motors. The products are intended for
use in industrial environments. The products must be installed and maintained by
professionals with sufficient knowledge to implement the safety and EMC measures in
accordance with the specifications described in this manual and the recognized state-of-the-
art engineering practices.
You may only use the products in compliance with the following requirements:
•All regulations and directives that are applicable at the place of final use, especially with
regard to electrical safety, functional safety and electromagnetic compatibility.
•All instructions, notes, technical data and safety information contained in this manual and
other supporting documentation.
Before using the products, you must perform a risk assessment of the entire application and
implement appropriate system design measures to ensure the safety of persons, property and
electromagnetic compatibility.
Open type products (IP00 / IP20) are intended for installation in control cabinets or housings,
which offer the necessary protection.
Any use other than that expressly permitted is prohibited, and can result in unforeseen
dangers.

Introduction
1.3 Validity
Installation and Operating Instructions for LOHER DYNAVERT I Series 7
10 Operating Instructions, 10/2022, 4BS0745-002
1.3 Validity
This document is applicable for DYNAVERT I Series 7, order number "6SE03...", from software
version 11C0238/CS89.
1.4 Text format features
Text format features
You can find the following text format features in these instructions:
1. Handling instructions are always formatted as a numbered list. Always perform the steps in
the order given.
•Lists are formatted as bulleted lists.
–Lists on the second level are hyphenated.
Note
The note provides you with additional information about the product itself, handling the
product - and the relevant documentation.

Introduction
1.5 Presentation of the display buttons in the operating instructions
Installation and Operating Instructions for LOHER DYNAVERT I Series 7
Operating Instructions, 10/2022, 4BS0745-002 11
1.5 Presentation of the display buttons in the operating instructions
Table 1- 1 Presentation of the display buttons in the text
Button on the inverter display
Presentation in the text
<On>
<Off>
<P>
<S>
<I>
<ENTER>
<up arrow>
<down arrow>

Introduction
1.6 Specific features
Installation and Operating Instructions for LOHER DYNAVERT I Series 7
12 Operating Instructions, 10/2022, 4BS0745-002
1.6 Specific features
The following text formats are used in this operating manual.
Display buttons
Table 1- 2 Display of special markings
Description in the text
Meaning
<Arrow up>
Press the button on the control panel once.
<Arrow up_ Arrow up>
Press the button on the control panel twice.
<S+I>
Press both buttons simultaneously.
Display text
P-SYSTEM DATA
Text shown in the control panel display is presented like this.
If you must branch in a menu, then the text is displayed as follows:
P-OPERATION:P-ContrlRelease:Local. P-OPERATION symbolizes the main menu,
P-ContrlRelease a submenu and Local the parameter.
In this case, in the appropriate menu, parameterize the controller enable if the operating
source is set to Local.
Several submenus can be nested.

Installation and Operating Instructions for LOHER DYNAVERT I Series 7
Operating Instructions, 10/2022, 4BS0745-002 13
Safety information
2
2.1 The five safety rules
For your personal safety and in order to prevent material damage it is essential that you
adhere to all the safety notices contained in your product documentation. Pay particular
attention to the safety notices on the product itself. When working on the equipment, always
observe the following five safety rules as defined by EN 50110-1 "Working in a voltage-free
state". Apply the five safety rules in the sequence stated before starting work.
Five safety rules
1. Disconnect the system.
Disconnect the auxiliary circuits, for example anti-condensation heating.
Wait until the capacitors have discharged.
2. Lockout to protect against reconnection.
3. Make sure that the equipment is de-energized and in a no-voltage condition.
4. Ground and short-circuit.
5. Cover or enclose adjacent components that are still live.
When you have finished working on the equipment, apply the measures in reverse order.
DANGER
High voltages
Potentially fatal voltages occur when this equipment is in operation which can remain
present even after the inverter is switched off.
High voltages cause death, serious injury or material damage if the safety instructions are
not observed or if the equipment is handled improperly.
•Ensure that only qualified and authorized personnel perform work on the inverter.
•Always observe the five safety rules specified above whenever you are carrying out any
work on the device.

Safety information
2.2 Use of tested, certified and Siemens-approved components
Installation and Operating Instructions for LOHER DYNAVERT I Series 7
14 Operating Instructions, 10/2022, 4BS0745-002
2.2 Use of tested, certified and Siemens-approved components
Observe the following instructions if you would like to integrate your own components in the
system.
WARNING
Components which are not approved
It is dangerous to use components which are not tested, not certified and not approved by
Siemens. This can result in death, serious injury or material damage.
•
Use only components which are tested, certified and approved by Siemens.
2.3 Areas that are potentially and particularly hazardous
Certain areas in the converter can represent a hazard during operation. The diagram
highlights these areas that represent a potential hazard.
Observe the following safety notices and comply with all rules and instructions.

Safety information
2.3 Areas that are potentially and particularly hazardous
Installation and Operating Instructions for LOHER DYNAVERT I Series 7
Operating Instructions, 10/2022, 4BS0745-002 15
①Stopping the converter via the display or by means of external control devices does not discon-
nect the converter from the line voltage.
②When you press the EMERGENCY OFF button, this does not mean that the converter is voltage-
free immediately.
③
Danger due to hazardous voltages when the cabinet doors are open.
④These voltages can remain due to self-excitation if the connection to the motor is not removed.
Some surfaces in the converter are hot during operation and for some time afterwards. Fans in
the converter can continue to rotate after the unit has been switched off.
⑤After disconnection of the line voltage, hazardous voltages can persist in the DC link (with cur-
rent-source DC link converters: in the commutation capacitors) or from external or auxiliary
power sources after the converter has been disconnected from the line voltage.
Depending on the parameterization and connection of external control devices, the converter
can start up automatically when the line voltage is connected.
Figure 2-1 Areas that are potentially and particularly hazardous

Safety information
2.4 Notes for operator protection
Installation and Operating Instructions for LOHER DYNAVERT I Series 7
16 Operating Instructions, 10/2022, 4BS0745-002
WARNING
Live components
During operation and shortly after the system has been switched off with the EMERGENCY
OFF button, high voltages are still present in the converter and its components. These
voltages may remain if the connection to the motor is not removed or grounded. This
danger exists with permanent-magnet synchronous motors and synchronous motors which
are not de-excited immediately. These voltages may remain if the connection to the motor
is not removed or grounded. High voltages cause death or serious injury if the safety
instructions are not observed or if the equipment is handled improperly.
Never open the covers or doors when the system is in operation or while the DC link
capacitors are still discharging (in the case of current-source DC link converters:
commutation capacitors). The DC link capacitors (commutation capacitors) can take up to
10 minutes to discharge (or 5 minutes with compact devices) after the EMERGENCY OFF
button is actuated.
WARNING
Automatic startup
Depending on the parameterization and connection of external control devices, the
converter can start up automatically when the line voltage is connected. This can result in
death, serious injury or material damage.
Confirm whether or not your system is capable of automatic starting and, if appropriate,
take measures to ensure personal safety and operational readiness at the driven machine.
2.4 Notes for operator protection
Read the following information about personal protection.
The device meets the safety requirements as defined by IEC EN 61800-5-1.
Specialist personnel
Ensure that any transport, installation, operation or maintenance work is carried out by
qualified, trained staff. The minimum qualification must be that of an electrician in
accordance with EN 50110 "Operation of electrical systems".
For the purpose of these basic safety instructions, "skilled technical personnel" means people
who are familiar with the installation, mounting, commissioning and operation of the
product. They must be properly qualified for the tasks with which they are charged. Qualified
personnel must also be thoroughly familiar with all the safety-related instructions and
measures described in the product documentation.

Safety information
2.4 Notes for operator protection
Installation and Operating Instructions for LOHER DYNAVERT I Series 7
Operating Instructions, 10/2022, 4BS0745-002 17
Safety-relevant instructions and information about working on the converter
DANGER
Live, moving or rotating parts
Converters have live, moving and rotating parts.
Death or serious injury can result if any essential covers are removed without authorization
or in the case of improper use or incorrect installation or operation.
Always take all the necessary precautions before working on the device.
DANGER
High voltages
High voltages cause death or serious injury if the safety instructions are not observed or if
the equipment is handled improperly.
Voltages of more than 50 V are present when this unit is operational. These voltages may
remain for some time after switching off or as long as the motor is turning over.
Make sure that work is only carried out by qualified personnel under due observance of the
five safety rules, the information in these operating instructions, and the instructions on the
product itself.
DANGER
Auxiliary and external supply systems
Hazardous voltages (e.g. control voltage, signal voltage, supply voltage for heaters and
fans) can persist even after the converter has been switched off. Contact with live parts can
result in death or serious injury.
Make sure that work is only carried out by qualified personnel under due observance of the
five safety rules, the information in these operating instructions, and the instructions on the
product itself.
DANGER
Electric shock
If you carry out maintenance or overhaul work on the converter without safely
disconnecting the power supply, serious injury or death due to electric shock can occur. The
PTC input is not an Emergency Off input that safely disconnects the converter or the motor
from the line supply.
Safely and reliably disconnect the power supply before opening covers or terminal boxes at
the converter. For example, use a main switch.

Safety information
2.4 Notes for operator protection
Installation and Operating Instructions for LOHER DYNAVERT I Series 7
18 Operating Instructions, 10/2022, 4BS0745-002
DANGER
Discharge time of commutation capacitors
High voltages persist in the commutation capacitors after the line voltage has been
disconnected.
High voltages cause death or serious injury if the safety instructions are not strictly observed
or if the equipment is handled improperly.
The commutation capacitors require up to 10 minutes before they are discharged to a safe
value (< 60 V).
Once you have switched off the line supply, do not touch the device or carry out any
maintenance work or repair work until the 10 minutes have fully elapsed.
Measure the voltage once the discharge time has elapsed.
DANGER
High voltages
Electrical accidents including electric shock occur when general safety instructions for
working on the device are not observed. Death, serious injury or material damage will
result.
Please note the following information for your safety:
•Keep to the five safety rules at all times and at every stage of work.
•Always disconnect the equipment before working on it.
•Leave the covers in place during normal operation and keep the cabinet doors closed.
•Do not use any instrumentation if you know it is defective or damaged.
•Secure the main circuit breaker in the OFF position so that it cannot be reconnected, for
example by removing the switch unit when working on a connected motor or the feeder
cable to the motor.
•Ground the converter cabinet and installed devices properly to ensure that no accessible
parts of the device are energized (live) or connected in any way to another dangerous
voltage source.
•Use an earthing spider for grounding purposes. Read the information provided in the
section "Safety instructions regarding maintenance and repairs" in "Maintenance and
servicing" in your operating instructions.
•Wear personnel protective gear such as goggles, ear protection and helmet to protect
yourself against injury.
•Always follow the national regulations and local specifications when working on the
equipment.